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Updated: Aug 18, 2025

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Generation of Defined Genomic Modifications Using CRISPR-CAS9 in Human Pluripotent Stem Cells
Published on: September 25, 2019
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Genome editing is induced in a binary manner in single human cells.
Gou Takahashi1, Daiki Kondo1,2, Minato Maeda1,2
1Regenerative Medicine Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
Iscience
|December 9, 2022
Summary
Genome editing outcomes vary, but new single-cell analysis reveals a binary pattern: cells are either fully edited or not edited at all. This finding improves understanding of genome editing induction and analysis strategies.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Genome editing can lead to diverse outcomes like insertions and deletions, even with precise nucleotide manipulation.
- Analyzing these outcomes at the single-cell level is crucial for generating genetically modified cell lines and evaluating gene therapy clinical effects.
- Current methods lack the ability to analyze genome editing at the single-cell level, focusing instead on cell populations.
Purpose of the Study:
- To develop and utilize a single-cell analysis strategy for systematically examining genome editing results in human cells.
- To investigate the nature of genome editing induction at the individual cell level.
Main Methods:
- Utilized the Single Particle isolation System (SPiS) for efficient isolation of single human cultured cells.
- Systematically analyzed genome editing outcomes within individual cells.
Main Results:
- Discovered that genome editing induction exhibits a binary nature.
- Observed that target alleles within individual cells tend to be either completely edited or entirely unedited.
Conclusions:
- Genome editing induction follows a binary pattern, impacting allele status within single cells.
- The study provides a novel strategy for analyzing genome editing outcomes at the single-cell level, enhancing understanding of gene editing processes.
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